he was sworn in by chief justice john roberts. vice president joe biden was sworn in today. the ceremony was held at the naval on virginia tower. >> the 20th amendment of the constitution requires the inauguration to be held on june the 20th at noon. they will be pucklily sworn in tomorrow with the pomp and circumstance. the district is the place to be. hundreds of thousands of people are descending on dc to witness history and be matter of the celebration. you can feel the excitement. audrey barnes is there live tonight. it's crowded their still tonight? >> reporter: there is a lot of people still out enjoying the night life in d.c., laura. visitors couldn't have had a better day to get out and enjoy the city before they are enjoyed tomorrow by 500 to 700,000 of their closest friends for the official swearing in ceremony at 11:30. people from all over are here in the city. we have talked to many who are stocking up on souvenirs. i talked to families from dallas, texas, akron ohio, new orleans, they said they will have a hard time sleeping tonight in anticipation of the big